diff --git a/part.cpp b/part.cpp
index 50a1b2093..263f3ad0b 100644
--- a/part.cpp
+++ b/part.cpp
@@ -1635,6 +1635,8 @@ void Part::guiActivateEvent(KParts::GUIActivateEvent *event)
     updateViewActions();
 
     KParts::ReadWritePart::guiActivateEvent(event);
+
+    setWindowTitleFromDocument();
 }
 
 void Part::close()